SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Jiwen Hu,TingTing Liu,Hong-Wen Gao,Senlin Lu,Kajsa Uvdal,Zhangjun Hu
By ingeniously using a (imino)coumarin-precursor, three reactive fluorogenic probes of MP , FP, and FMP have been fabricated in a single facile synthetic route. MP and FP are able to respectively act as selective “turn-on” fluorescent probes for detecting Hg 2+ and F − in buffer solution via specific analyte-induced reactions. Linear ranges for the detection of Hg 2+ and F − are 0–10 μM and 0–100 μM with the limits of detection (LODs) of 4.0 × 10 −8 M and 1.14 × 10 −6 M (3δ/slope), respectively. FMP is able to work as a molecular “AND” logic gate-based fluorogenic probe for monitoring the coexistence of Hg 2+ and F − via a multistep reaction cascade. The analytes-induced sensing mechanisms have been determined by using high-performance liquid chromatography analysis (HPLC). In addition, three probes show negligible toxicity under the experimental conditions, and are successfully used for monitoring Hg 2+ and F − in living cells with good cell permeability. The success of the work demonstrates that ingenious utility of specific analyte-induced reactions and conventional concepts on the appropriate molecular scaffold can definitely deliver tailor-made probes for various intended sensing purposes.
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Scientific Reports
·
2022
·Vol. 12
·期 1
·1-8
·
IF 4.996
Wu Junsheng,Zhao Zhuo,Zhou Yanwen
Tin-based perovskite material is the best choice to replace heavy metal element lead during the last several years. Cs 2 SnI 6 with Sn 4+ is a fascinating optoelectronic material, which is a more air-stable composite cesium tin halide peroxide variant from CsSnI 3 . However, the optoelectronic performance between N and P type of Cs 2 SnI 6 varies considerably. Herein, we synthesized uniform Cs 2 SnI 6 by modified two-step method, which thermal evaporated CsI firstly, and followed annealing in the SnI 4 and I 2 vapor at 150 °C resulted in uniform Cs 2 SnI 6 films. SnF 4 is used as a dopant source to improve the optoelectronic properties of Cs 2 SnI 6 films. Results indicate that good crystallinity was obtained for all films and the doped films underwent a crystalline plane meritocracy transition. The doped films had a flat, non-porous morphology with large grains. The high transmittance of the doped films in the infrared region led to the avoidance of self-generated thermal decomposition. With the help of F − , the films became more conductive and had higher carrier mobility. DFT calculations showed that doping with F reduced the surface energy of (004), resulted in a preferred orientation transition in the crystal of Cs 2 SnI 6 . Fluorine doped double layer perovskite materials would have a broader application prospect.
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MOLECULES
·
2022
·Vol. 27
·期 3
·1098
·
IF 4.927
Zhe Liu,Hong Wang,Zhu Chen,Ying Ye,Yuwei Wang
Chiral cholesteric molecular tweezer 7d was synthesized and its influences on changes in the ultraviolet (UV) and fluorescence spectra of various anions were investigated. The results displayed that molecular tweezer 7d selectively recognized F−ions in dimethyl sulfoxide with a detection limit of 5.14 μmol/L, while other anions had little interference. On this basis, a method for the rapid detection of F−ions by host molecular tweezer 7d was established, and the naked-eye detection of F−was realized through the unique yellow color of the complex solution. According to the determination of F−ions in real food samples, it was proved that the established method had good application prospects in F−ion detection.Keywords:cholesteric molecular tweezer;fluoride ions;naked-eye detection;specific recognition;food samples
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PubMed
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APPLIED AND ENVIRONMENTAL MICROBIOLOGY
·
2025
·
IF 3.7
Ruomu Chen,Yutian Gan,Wanting Huang,Chenyang Wang,Junhong Ge,Yuanyuan Cheng,Wenjing Qiao,Jiandong Jiang,Kai Chen
Bisphenol F (BPF) is an emerging environmental pollutant widely present in surface water and wastewater systems. Microbial activity is crucial in driving its degradation, offering a potential avenue for mitigating its environmental impact. Although the degradation pathway for BPF has been identified in various bacteria, the biodegradation mechanisms remain unclear. In this study, we isolated a highly efficient BPF-degrading strain of Sphingobium yanoikuyae DN12, which could utilize BPF as the sole carbon and energy source for growth, from a river sediment in Anhui Province, China. Through ultra-performance liquid chromatography high-resolution mass spectrometry (UPLC-HRMS) analysis, we found that oxidation and hydrolysis are key steps for BPF biodegradation. Utilizing whole-genome sequencing, comparative transcriptomics analysis, and biochemical identification, a gene cluster bpf was identified to be involved in BPF degradation. BpfAB is a two-component oxidoreductase responsible for converting BPF to 4,4'-dihydroxybenzophenone (DHBP). BpfC is a Baeyer–Villiger monooxygenase responsible for converting DHBP to 4-hydroxyphenyl-4-hydroxybenzoate (HPHB). Isotope tracing demonstrated that the oxygen atom incorporated by BpfAB originates from water, whereas that incorporated by BpfC derives from molecular oxygen (O2). BpfD is an α/β hydrolase responsible for converting HPHB to 4-hydroxybenzoate and 1,4-hydroquinone. Analysis of the taxonomic and habitat of 325 prokaryotic genomes revealed that BpfA-like homologs are predominantly found in the phylum Pseudomonadota, primarily inhabiting soil and aquatic environments. This study enhances our understanding of the biodegradation mechanism of BPF and provides guidance for the effective remediation of BPF-contaminated environments.
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PubMed
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 92
·75333-75340
·
IF 3.84
Qingqing Wang,Xiusheng Zhang,Yunlong Xu,Dong Liu,Hui Dong,Yang Zhang
A series of Ni and F ion doped LiMn2O4 composite cathode materials are synthesized via a sol–gel method with citric acid as the chelating agent. The morphology and structure of LiNixMn2−xO4−yFy were characterized by XRD, SEM, EDS and the electrochemical performance was tested and characterized by CV and EIS. The results showed that Ni and F ions were uniformly dispersed in the lattice without changing the structure and morphology of LiMn2O4. LiNi0.03Mn1.97O3.95F0.05 exhibits an excellent electrochemical performance among all the samples, and delivers an initial discharge capacity of 120.3 mA h g−1 at 1C and with a retention of 94.5% (25 °C) and 80.4% (55 °C) after the 100th cycle respectively. The results demonstrated that the dual-doping of Ni and F ions in lithium manganate can prevent the manganate from dissolving in the electrolyte and enhance the cycling performance at elevated temperatures, exhibiting excellent performance at different discharge rates.
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Minjing Chen,Wenyang Wang,Zhepu Shi,Zhaoping Liu,Cai Shen
Solid electrolyte interphase (SEI) grown on electrode surfaces during charge-discharge processes plays a key role in the cycle performance of lithium-ion batteries. In-situ study of cathode electrolyte interphase (CEI) is challenging due to the complicated interfacial reactions on the cathode materials including gas formation and the formation of thin CEI film. Herein, we applied the electrochemical atomic force microscope (EC-AFM) to study the interfacial changes in high energy density Li- and Mn-rich (LMR) materials with an F-rich electrolyte (1 M LiPF 6 FEC/FEMC/HFE). The study indicated that the electrolyte formed a uniform and dense passivation CEI film on the LMR material surface at high voltage. The CEI is composed of inorganic LiF substrate as confirmed by X-ray photoelectron spectroscopy (XPS). The assembled battery (LMR||Li) shows an excellent cycle performance and maintains capacity at 85.5% after 100 cycles, compared to the 13.7% retention rate of commercial carbonate electrolyte (1 M LiPF 6 EC/EMC/DMC).
研究领域:
材料科学
·
电化学
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INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2022
·Vol. 46
·期 10
·14534-14545
·
IF 4.672
Yicen Liu,Bing Zhu,Yan-gai Liu,Hang Zhao,Zekun Wang,Liming Wu,Xi Zhang,Jian Chen
Summary In this study, we synthesized a bimetal hydroxyl fluoride, Co 0.6 Zn 0.4 (OH)F, with an overlapping nanoneedle structure using a simple hydrothermal method. The synthesized Co 0.6 Zn 0.4 (OH)F was used as a new electrode material to study its electrochemical performance. Because of the synergy between Co and Zn and the high ionicity of fluorides, the Co 0.6 Zn 0.4 (OH)F electrode exhibited a discharge capacity of 1355.5 mAh g −1 during the first charging and discharging cycle. After 400 cycles at a current density of 2 A g −1 , the Co 0.6 Zn 0.4 (OH)F electrode showed an excellent specific capacity of 756 mAh g −1 . The Co 0.6 Zn 0.4 (OH)F electrode also exhibited an excellent capacitance contribution rate, indicating good rate performance. In addition, the hydroxyl and oxygen vacancies in the electrode material promoted the lithium/dilithium reactions. Therefore, Co 0.6 Zn 0.4 (OH)F is an excellent lithium storage material with high rate; thus, it has a certain potential application value in the future.
研究领域:
材料科学
·
电化学
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JOURNAL OF CULTURAL HERITAGE
·
2025
·
IF 3.3
Yumei Chai,Aranzazu Sierra Fernandez,Biao Zhang,Hongjie Luo,Xichen Zhao,Mato Knez,Jianfeng Zhu
Sandstone buildings in humid environments are highly susceptible to fungal colonization, which poses a significant threat to the buildings’ preservation. Therefore, the development of coatings with antimicrobial properties is essential to protect these structures. This study demonstrates the antifungal activity and durability of amphiphobic and UV-absorbing F-ZnO/SiO 2 (FZS) coatings. We show that the coating efficiently inhibits the growth of Aspergillus niger , protecting the sandstone surface from one of the most common molds. A fungal inhibition rate of up to 94 % was achieved with FZS nanocomposite concentrations >0.30 % (g/L). To ensure consistent antifungal performance along with enhanced water repellency and durability under practical conditions, a concentration of 0.37 % was selected for the FZS coating. Accelerated aging tests revealed that the coated sandstone retained its antifungal activity for over 56 days under harsh environmental conditions, exhibiting an antifungal effect 800 % greater than that of uncoated sandstone. After 70 days, the coating still retained its water repellency. These results underscore the potential of the coating for long-term protection of sandstone relics, offering durability and ease of maintenance for real-world applications.
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PLoS One
·
2026
·Vol. 21
·期 5
·e0339014
·
IF 2.8
Yan Zhang,Hongshen Guo,Yanping Xu,Xiaochuan Chen,Miaomiao Zhang,Naicheng Li,Abdullah Gera
Long-term monoculture of ginger triggers Fusarium wilt, a disease caused by Fusarium oxysporum f. sp. zingiberi ( Foz ). However, the interaction between autotoxins and pathogens remains poorly understood. This study examined the allelopathic effects of four autotoxins, syringic acid, coumarin, ferulic acid, and 7-hydroxycoumarin, on the growth, reproduction, and virulence traits of Foz . These compounds were previously identified as inhibitors of ginger growth and enzyme activity. The results revealed that the responses of Foz varied, likely because of the structural differences among the autotoxins. Syringic acid significantly inhibited mycelial growth, sporulation, and spore germination, while markedly enhancing the activity of cell wall-degrading enzymes and mycotoxin synthesis, as evidenced by the upregulation of FUB3 and FUB9 . Coumarin demonstrated a pronounced inhibitory effect on biomass production while concurrently stimulating sporulation and mycotoxin synthesis, as indicated by the upregulation of FUB6 and FUB9 . Ferulic acid treatment reduced the activity of cell wall-degrading enzymes and spore germination, while upregulating sporulation and mycotoxin synthesis. A similar pattern was observed with 7-hydroxycoumarin, which exerted a strong inhibitory effect on mycelial growth, biomass production, mycotoxin synthesis, and FUB gene cluster expression, except for FUB1 and FUB3 expression. In conclusion, four autotoxins exhibited diverse defensive roles against Fusarium wilt, whereas the pathogen enhanced its pathogenicity to counter host regulations. This study provides the first evidence of an interaction between ginger autotoxins and Foz .
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EMBO Molecular Medicine
·
2026
·
IF 7.9
Liu Lijie,Yan Mengrong,Liang Ruoxu,Wu Qingxin,Qu Changbin,Wu Huiqi,Liao Zhi,Chen Huiyu,Zou Jingjing,Sun Zeyun,Niu Dongyu,Wu Liyuan,Zhao Li,Dai Jialing,Shen Jialun,Zhang Long,Zhang Wei,Peng Wei
Respiratory syncytial virus (RSV) remains a major cause of severe respiratory disease, and stabilization of the prefusion (preF) conformation of the F glycoprotein is central for vaccine development. Here, we report a structure-guided engineering strategy that enhances preF stability by reducing the hydrophobic cavity within the trimeric F protein. Targeted modifications at metastability-associated sites generated RVF-88, a disulfide-free stabilized preF immunogen that preserves key neutralizing epitopes, including antigenic site Ø, while exhibiting improved structural integrity and long-term storage stability. Formulated as an unadjuvanted bivalent vaccine, RVF-88 elicited potent neutralizing antibody responses and durable immune protection lasting up to 5 months in mice. Vaccination also protected both mice and cotton rats against RSV challenge. Structural analyses confirmed the intended cavity-reduction design, revealing a reduced apical hydrophobic cavity volume and surface area while maintaining the prefusion architecture. Together, these findings establish hydrophobic cavity reduction as a rational strategy for stabilizing prefusion RSV F and provide a promising next-generation vaccine candidate with improved stability and immunogenicity for further clinical development.
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高影响因子
CHEMISTRY OF MATERIALS
·
2026
·
IF 7.1
Jianxun Wang,Hongxin Tao,Shuo Li,Ruoxi Wang,Jingyu Qian,Xiaoyu Zhang
Fluorine ion doping serves as an effective strategy for enhancing the stability of perovskite quantum dots (QDs), which is crucial for constructing high-performance and highly stable optoelectronic devices. However, conventional fluorination methods often rely on highly toxic fluorine sources, such as hydrofluoric acid (HF), posing safety hazards and limiting large-scale fabrication. Herein, we propose a simple and universal in situ fluorination strategy based on the reaction between benzoyl fluoride and oleylamine under mild conditions, which safely generates HF and enables efficient fluorine doping. The incorporated fluoride ions enter the CsPbI3 lattice, effectively suppressing octahedral tilting and thereby enhancing structural stability. The resulting F-doped CsPbI3 QDs achieve a photoluminescence quantum yield close to unity and exhibit a 15-fold improvement in T95 under light illumination stability testing. Deep-red light-emitting diodes fabricated from these QDs deliver a peak external quantum efficiency of 25.7% and show a 20-fold enhancement in operational lifetime. Furthermore, this approach is successfully extended to green- and blue-emitting perovskite QD systems, demonstrating its broad potential for full-color display applications. This work provides a rational and scalable chemical pathway to address the intrinsic instability of perovskite QDs, paving the way toward efficient and durable optoelectronic devices.
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ChemPhotoChem
·
2026
·Vol. 10
·期 3
·e202500362
·
IF 3
Xianye Wang,Hao Ge,Chao He,Guanying Cao
All-inorganic perovskite quantum dots (QDs) (CsPbX 3 , X = Cl, Br, I) have shown great promise in optoelectronic applications but are severely hindered by their poor environmental stability and photoluminescence (PL) quenching. In this work, we report a novel approach for enhancing both stability and optical performance by insitu growth of CsPbBr 3 QDs within a borosilicate glass matrix, assisted by SrF 2 and Sm 2 O 3 codoping. The introduction of F − ions from SrF 2 modifies the glass network structure, promoting uniform nucleation and growth of QDs. Simultaneously, Sm 3+ doping, through partial incorporation into the CsPbBr 3 QD lattice, passivates surface defects and induces lattice contraction, which enhances quantum confinement effects. At the optimal Sm 3+ concentration of 1 mol%, the PL intensity increases by 332.8%, the photoluminescence quantum yield rises from 22.01% to 37.5%, and the fluorescence lifetime extends from 95.05 to 127.69 ns. The glass encapsulation provides long-term air and water stability, outperforming conventional ligand-capped QDs. Moreover, the developed materials were successfully applied in high-brightness green and white light-emitting diodes, achieving wide color gamut coverage (up to 129.4% NTSC), and demonstrated strong potential in forensic fingerprint visualization. These results provide a new pathway for developing stable, multifunctional perovskite-based optoelectronic materials. Graphical This study demonstrates a dual strategy of F − /Sm³ + codoping and glass encapsulation to significantly enhance the luminescence performance and stability of CsPbBr 3 quantum dots. Optimal Sm³ + doping (1 mol%) yields a 332.8% increase in photoluminescence intensity, improves quantum efficiency from 22% to 37.5%, and extends fluorescence lifetime to 127.69 ns. The glass matrix provides exceptional environmental stability, retaining 78.65% initial luminescence after 50 days in air. Resulting light-emitting diode devices achieve a wide color gamut covering 129.4% of the NTSC standard.
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